diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 0210606..17ffa05 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -628,6 +628,16 @@
     }
     return ret;
 }
+status_t Parcel::writeByteArray(size_t len, const uint8_t *val) {
+    if (!val) {
+        return writeAligned(-1);
+    }
+    status_t ret = writeAligned(len);
+    if (ret == NO_ERROR) {
+        ret = write(val, len * sizeof(*val));
+    }
+    return ret;
+}
 
 status_t Parcel::writeInt64(int64_t val)
 {